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31. Which type of echocardiogram is performed by placing an ultrasound probe on the chest wall? (standard, noninvasive echocardiogram)

29. Match the following conditions with the corresponding cell count.

28. Which of the following is a relative contraindication for arthrocentesis? 

27. When assessment of posterior cardiac structures (eg, left atrium, left atrial appendage, interatrial septum, aorta distal to the root), prosthetic cardiac valves, structures < 3mm in size (eg, small vegetations or thrombi), the best choice of echocardiography is?

23. The echocardiogram can visualize all of the following except:

Final Submission Before picking up your phone, make sure that: You have completed every multiple-choice question. You have completed all free-response questions. You have finished all scratch work. You have written your name on each page at the top right corner. You will not make any further changes to any answer. Picking up your phone begins the final submission process. Once you pick it up, you may not return to the exam questions, revise any answer, or add anything to your handwritten work. 1. Show your work to the webcam Put all pages you wrote on in the correct order, including scratch work. Your free response solutions should be first, with any scratch work afterwards. Before picking up your phone: State aloud: “I have finished the exam and am now beginning the scanning and submission process.” Hold each completed page clearly in front of the webcam, one page at a time. Make sure the entire page is visible. 2. Scan your written work to a PDF You may now use your phone only to scan, transmit, and upload your completed work. iPhone or iPad: Open the built-in Files app, tap the three-dot menu, and select Scan Documents. Android: Open Files by Google and select Scan. You may alternatively use Google Drive or another PDF-scanning app. If using Google Drive, use Share or Send a copy to attach the finished PDF to your UC email. Scan every page into one PDF. Make sure that: Every page is included. The pages are in the correct order. Every page is readable. No page is sideways or upside down. You may not use your phone to access Canvas, view exam questions, search for information, communicate with another person, access course materials, or use any calculator, AI tool, or other unauthorized resource. 3. Email the PDF to yourself Using your UC email account on your phone, email the PDF to your own UC email address, and CC me at gruberan@ucmail.uc.edu. Use the subject line “Midterm 3 – Last Name, First Name”. The emailed copy provides a timestamped backup, but emailing the PDF does not complete your submission. The PDF uploaded to this Canvas question is your official submission. 4. Retrieve the PDF on your exam computer On the computer running Honorlock, navigate to UC webmail. Open only the message containing the PDF you just sent. Download the attached PDF to your computer. Return to this Canvas question. Do not read, search, or open any other emails or attachments. 5. Upload and submit Upload the PDF to this question, and submit the quiz.

4. Consider the following production function Q = LK with MPL=K and MPK=L (Hint: labor and capital are NOT perfect substitutes) a. Calculate the marginal rate of technical substitution of labor for capital. b. Indicate if the MRTS is increasing, decreasing or constant. c. Find three points in the isoquant associated to the production of Q=500. Show the graph and also a table indicating the values of L and K used in at least three points in the isoquant.

3. The production function is given by q=20KL with MPL=20K & MPK=20L. The cost of labor w=10 and the cost of capital r=20. a) The firm wants to produce 4,000 units of output. In the short run the plant’s capital is fixed at k=5. Find the amount of labor it must employ to produce 4,000 units of output. Calculate the short run total cost. Show the isocost and isoquant associated with that point (label it as point “A”). Scale: x-axis: 1 square=2 units; y-axis: 1 square=2 units. b) In the long run the firm wants to produce 4,000 units of output. Find the optimal combination of inputs. Show and label the isocost and isoquant associated with that point. Label the optimal combination of inputs as point “B”. Scale: x-axis: 1 square=2 units; y-axis: 1 square=2 units.              

5. Suppose this market is a monopoly. a) The monopolist faces the same demand curve P = 300- 5Q and initially faces a constant marginal cost MC = 30. Calculate the profit- maximizing monopoly quantity and compute the monopolist’s total revenue at the optimal price. b) Suppose that the monopolist’s marginal cost increases to MC = 90. Compute the monopolist’s total revenue at the optimal price.

Shrimp, SA is a small business that sells farm-raised shrimp. The market for farm-raised shrimp is perfectly competitive. The short- run total cost of production is STC( Q) = 0.2Q2  + 12Q  + 600, where Q is the number of pounds of shrimp sold. The prevailing market price is $ 40 per box of shrimp. a) How many pounds should Shrimp, SA sell to maximize profit? b) Is Shrimp, SA having profits or losses? Calculate. c) If a firm is facing loses, when would you recommend them to shut down? Explain under which circumstances you would suggest the owner to shut down.